An old artists trick "squint" at your drawing, if something stands out stronger than the rest, be it shadow or highlight, then it probably could use backing off a bit. Another thing I have been thinking about, highlights and shadows are never constant in real life, you can try building high spots and low spots into your drawing to make them less perfect.
btw, love the way this drawing is taking shape, should be one of the best hurri drawings around when you finish her up.
Happy New Year to you all
